HydroBASINS lev08 watershed · #2080311380
Bassin de Удра
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 3 administrative regions : Demidovskiy rayon, Rudnyanskiy rayon, Smolenskiy rayon
Sub-basin area
636,6km²
Upstream area
636,6km²
Discharge
4,67m³/s
Mean elev.
187m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Smolenskiy rayonSmolensk · Russia505.0 km²79.0% of basin
- Rudnyanskiy rayonSmolensk · Russia107.6 km²16.8% of basin
- Demidovskiy rayonSmolensk · Russia26.9 km²4.2% of basin
1 intersecting protected areas
Ozero Kasplya
IUCN IIINatural Monument
3.54 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
162 distinct species · 654 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Удра : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 57 interactions GloBI sur 4 types (connectance 9.6%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
5,1°C
Annual rain
642mm
Moisture idx (CMI)
-0,01
Runoff
231mm/an
PET
651mm
AET
495mm
Mean slope
0,9°
Water table
95cm
Forest
30%
Crops
33%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)